Fluid-flow meter.



J. WILKlNSQlI.

FLUID FLGW METER.

APPLICATION FILED JUNE 21, 1912.

Patented Dec. 2, 1913.

2 SHEETS-SHEET 1.

Inventor: JamesVVlKi son,

L2H L "@600; His aqttorngg J, WILKINSON.

mm new METER.

APEMCMFION FILED J1EE? 21, 1912.

. r ,w k ,I' l v Pabensev. Eva. 1913.

2 SHEETS-fiHIIET fails it UNITED snares PATENT OFFICE.

JAMES WILKINSON, OF BOSTON, MASSACHUSETTS, ASSIGNOR T0 GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK.

FLUID-FLO! METER.

1 ,osdsoo.

Specification of Letters Patent.

- Application filed June 21. 1912.

Patented Dec. 2, 1913.

Serial No. 705,000.

To all whom it may concern:

Be it known that I. Janus .Vnauxsox.

a citizen of' the United States. residing: at Boston, county of HHllOlh. State o't Massa- This invention relates to apparatus for measuringthe flow of tluid tln'ough a main, and its object is to provide a cmveuient de viceavherein the quantity of lluid passing at any giveninstant can be read from a scale of ('ouside'able amplitude; theconstruction being such that small changes in liowfare readily shown onsaid scale.

The invention is of especial valne wherethe fluid flow is relativelysmall and the velocity relatively low.

The invention consists of a mercury cham ber containing a tloat which iscaused to rise and tall by variations in the (low and is conuected tomechanism for amplifying its movements so that an index will sweep overa wide range 01 gmuluations on a scale.- The float is connected to alever pivoted on an oblique axis, so that as the float rises and alsoturns said lever on its axis. A magnet is mounted on or made a part ofsaid lever, and-this in turn controls the movements of a freely pivotedmagnet adjacent to but outside of the mercury chamber, by whosemovementsan index is made oscil- -late over a radnated scale.

In the accompanying drawings, Figure l is atront elevation of myimproved meter; Fig. 2 is an upright sect-ion thereof on the line 2-2 ofFig. 4; Fig. 3 is a top plan View; Fig. 4 is a similar view partly inhorizontal section; F ig. 5 shows some of the passages and a controllingvalve; and l 1g. 6

l shows on a small scale one modeot consis uecting the meter to the mainthrough which lows the fluid to be metered.

The meter has an upright back 1. from which projects forward a suitablebody 2 in which is formed a reservoir or recess 3. For convenience, thisrecess is circular in horizontal cross section and its upper edge ispreferably ral'ibetedto receive a flange on a cylindrical block 5 whichcloses the uppe part: of the recess, so'as to leave a chamber 6 int-l'ic lower portion of said recess which communicates by a passage 7with a pipe 8 secured to the upper part of the back 1, and coin ecte iWith the leadlng OllilCQS m a sorted through the holes 22.

litot tube or other device-"for producing a pressure in said chamberthat bears a definite relation to the rate of flow. The block ispreferably counterbored, the counterbore forming part oi. a chamber 9which is connected by a passage 10 with a pipe 11 secured to said backand connected with the trailing orifices in the Pitot tube or'otlierpressure difference device. A bypass 1?, controlled by a stop valve 13,connects these two passages in the back 1, as shown in Fig. Followingone wall of the counterbore in the block is a nearly semicircular slot14 extending through the bottom of the block and connected at its bottomby a passage 15 in the walls of said slotwith the annular chamber 6. Thewalls of the slot. extend from the bottom wall of the block to the bottom of the recess except for the portion cut away to form the passage15.

A quantity of mercury 16 partially fills the chamber 8 and the slot 14.The normal level of the mercury can be regulated by a screw-threadedplunger 17 working in a hole in a boss 18 on the under side of the body2, and locked by a cap nut 19 screwed upon the end of said plungeragainst a gasket 20.

A domeshaped head 21 covers the block 5 and clamps its flange 4, asshown in Fig. 2, being; secured to the body 2 by screws in This head,taken with the counter-bore in the block and the slot 1% extendingdownwardly therefrom, forms a chamber to cooperate with thecommunicating chamber 6, the two chambers and the mercury 16 functioningas the U-shaped n'ietering tube commonly used in instruments ofthis'kind.

A float QZlrest's upon the mercury in the. 1

slot 1 and is-connected to a lever 24 provided with trunnions 25 whichare mounted: preferably in jeweled bearings in a ring 26. A strap 27holds this ring, so that said ring can be angularly adjusted ifnecessary. The strap has feet provided with slots to receive the screws28, so that it can be adjusted- *"Em lever Qbta in 1% level of barscomlnnni 1:1e1'm.a1"'" s? id "than: supported jourmflai on an he 'an,an: Gun-20w; "v25 mama ism W k 2",?

01: -11: Queue 9 magnet rm'ss 9 camposed 0 x amems A ms'i'er 1m:mmsnring G in F I comp -ising :1 b0 1y c011 1 1 7. v. 7" Ear recess a bidividin rec 3$ mm? and allies an;

m s (:mnmunic mercury hex: cham'ioef s11 eves: connecte to s-uld ences,cox": ising a body cm; a block dlvlding said was camm'amic 1; of memur"1* said chambers, 21 by the 111:2 rcury in the 2.1

in at W10 -1- 3;; pmuca L my; points on 0 Siam 0:

flop. a use with movisisns a "I v float s",-

I have descmb d chamba lg a magnet connected $10 sald; 11 51011 of myinventlon, "10 3 ed. on am a 15 obhque to the ve3- sing said magnet amus which 1' new censiel ta ozztslde of said head 6110315 C O in' (A Amete for measu ing in 11 0f ES 115 3 comp a mass of 111%? ided withtherefor so constructed. 'h nearly P611068 Wil m2 V Xtemfing 71'0m sa, 1cmmmercury, 51 supper n of said block,

. I non-magnetic turn a, lever crnnecteql 5:0 i.

. am e 9. A meter: for ineasurin pressure diti'er ences, comprising amass 0 mercury, a container therefor so constructed that the pressuredifferences will cause the rise and fall .of the mercury, a float partlysubmerged in tainer therefor so constructed that the pressuredifi'erences will cause therise and fall of the memm a float'partlysubmerged in said mercury and supported on an axis oblique to thevertical, a magnet connected tto'15 said float, a head inclosmg saidmagnet, and

n cooperating magnet outside of said head for indicating the movementsof the inner magnet.

In witness whereof, I have hereunto set 20 my hand this 19th day ofJune, 1912.

JAMES WILKINSON.

\Vitnesses FRANK E. WILSON, N. L. GANNON.

